Results 51 to 60 of about 1,902 (146)

Cellulose Acetates in Hydrothermal Carbonization: A Green Pathway to Valorize Residual Bioplastics

open access: yesChemSusChem, Volume 18, Issue 2, January 14, 2025.
Pure and commercial cellulose acetates are subjected to hydrothermal carbonization as a possible end‐of‐life strategy. The plasticizers cause the material to completely dissolve in the liquid phase at 190 °C. Valuable carbonaceous solids and platform chemicals were observed in the products, proving the possibility of applying this approach in a ...
Giulia Ischia   +7 more
wiley   +1 more source

Discovering new arene-catalyzed lithiations [PDF]

open access: yes, 2010
La litiació catalitzada per hidrocarburs aromàtics és una metodologia útil i versàtil que promou els processos de litiació en condicions de reacció molt suaus.
Yus, Miguel
core  

The structure of the hexameric atrazine chlorohydrolase AtzA

open access: yes, 2015
Atrazine chlorohydrolase (AtzA) was discovered and purified in the early 1990s from soil that had been exposed to the widely used herbicide atrazine. It was subsequently found that this enzyme catalyzes the first and necessary step in the breakdown of ...
Balotra, S.   +5 more
core   +1 more source

Visible Light Promoted Site‐Specific Functionalization of α‐Acyloxy Carboxamides: Unlocking a Forbidden Chemical Space in the Passerini Reaction

open access: yesChemistry – A European Journal, Volume 30, Issue 50, September 5, 2024.
A novel method is presented, demonstrating the facile generation of α‐acyloxy carboxamide radicals via photoredox catalysis of Passerini adducts, obtained employing a 4‐formyl‐1,4‐dihydropyridine. These radicals efficiently undergo Giese reactions with various olefins, yielding novel Passerini compounds unattainable through traditional aldehyde‐based ...
Francesca Brunelli   +5 more
wiley   +1 more source

Total syntheses of conformationally-locked difluorinated pentopyranose analogues and a pentopyranosyl phosphate mimetic [PDF]

open access: yes, 2007
Trifluoroethanol has been elaborated, via a telescoped sequence involving a metalated difluoroenol, a difluoroallylic alcohol, [2,3]-Wittig rearrangement, and ultimately an RCM reaction and requiring minimal intermediate purification, to a number of ...
Miles, Jonathan A. L.   +4 more
core   +1 more source

Advances Toward Amphidinolides C, F and U: Isolations, Synthetic Studies and Total Syntheses

open access: yesChemistry – A European Journal, Volume 30, Issue 27, May 14, 2024.
Amphidinolides C, F and U are a sub‐class of polyketides sharing a similar structure, isolated from dinoflagellates or octocoral sponges and exhibiting high cytotoxic activity. This review discloses the progress made in their isolations and structural determinations and the various synthetic approaches and successful attempts leading to their total ...
Ismaila Ciss   +3 more
wiley   +1 more source

Meta‐omics assisted microbial gene and strain resources mining in contaminant environment

open access: yesEngineering in Life Sciences, Volume 24, Issue 5, May 2024.
Abstract Human activities have led to the release of various environmental pollutants, triggering ecological challenges. In situ, microbial communities in these contaminated environments are usually assumed to possess the potential capacity of pollutant degradation.
Yiqun Huang   +5 more
wiley   +1 more source

Role of Dehalogenases in Aerobic Bacterial Degradation of Chlorinated Aromatic Compounds [PDF]

open access: yes, 2014
This review was conducted to provide an overview of dehalogenases involved in aerobic biodegradation of chlorinated aromatic compounds. Additionally, biochemical and molecular characterization of hydrolytic, reductive, and oxygenolytic dehalogenases was ...
Hanhong Bae, Pankaj Kumar Arora
core   +2 more sources

Toxicity of Dietary Exposure to 3‐Monochloropropanediol, Glycidol, and Their Fatty Acid Esters

open access: yesJournal of Food Quality, Volume 2024, Issue 1, 2024.
3‐Monochloropropane‐1,2‐diol (3‐MCPD), 2,3‐epoxy‐1‐propanol (glycidol), and their fatty acid esters are heat‐induced food toxicants that have widely been investigated. This review study presents an overview of current knowledge about the dietary toxicity of 3‐MCPD, glycidol, and their fatty acid esters. A literature search in two databases from January
Daniel Sitsofe Yabani   +4 more
wiley   +1 more source

The application of nitrido manganese reagents to the synthesis of protected N-methyl D-fucosamine [PDF]

open access: yes, 1998
A synthesis of protected D-fucosamine and N-methyl fucosamine from D-galactose is described. The synthesis is carried out in ten steps and includes the amination reaction of D-fucal with an easily prepared Mn≡N ...
Carreira, Erick M.   +3 more
core  

Home - About - Disclaimer - Privacy